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arXiv · 1704.07737

Tunable Magnetic Textures: From Majorana Bound States to Braiding

Alex Matos-Abiague·Javad Shabani·Andrew D. Kent·Geoffrey L. Fatin·Benedikt Scharf·Igor Žutić
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Abstract

A versatile control of magnetic systems, widely used to store information, can also enable manipulating Majorana bounds states (MBS) and implementing fault-tolerant quantum information processing. The proposed platform relies on the proximity-induced superconductivity in a two-dimensional electron gas placed next to an array of magnetic tunnel junctions (MTJs). A change in the magnetization configuration in the MTJ array creates tunable magnetic textures thereby removing several typical requirements for MBS: strong spin-orbit coupling, applied magnetic field, and confinement by one-dimensional structures which complicates demonstrating non-Abelian statistics through braiding. Recent advances in fabricating two-dimensional epitaxial superconductor/semiconductor heterostructures and designing tunable magnetic textures support the feasibility of this novel platform for MBS.

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Alex Matos-Abiague, Javad Shabani, Andrew D. Kent, Geoffrey L. Fatin, Benedikt Scharf, Igor Žutić. 2017-06-22. Tunable Magnetic Textures: From Majorana Bound States to Braiding. https://doi.org/10.1016/j.ssc.2017.06.003

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